Heating pad



FIG. 1 is a perspective view of a heating pad, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is an end elevational view thereof looking into the gap in the outer circumference;

FIG. 4 is a side elevational view thereof, the opposite side elevational view being identical thereto;

FIG. 5 is an end elevational view thereof, opposite that shown in FIG. 3;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view of a second embodiment of the heating pad, with the only difference residing in the central portion cut out portion. 

The ornamental design for a heating pad, as shown and described. 